Dismissing proportional representation on the basis of the Italian system is a bit selective. Proportional representation works in extremely well in other European countries.

And what about the Midlothian Question? Is it right for SNP MPs to be able to vote on English or Welsh matters?

Let me be clear before anyone misunderstands me; I am neither for nor against proportional representation; neither am a I particularly for or against the existing first-past-the-post system. It's not the principle of any system that's the problem but the design and implementation.